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Synthesis, crystal structure, and magnetism of the binuclear radical complex [N-hydrogenpyridinium]2[Ni(tdas)2]2

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The binuclear radical complex [N-hydrogenpyridinium]2[Ni(tdas)2]2 (tdas = 1,2,5-thiazole-3,4-dithiolate) has been prepared and its crystal structure determined by X-ray crystallography. In the binuclear radical complex, the two nickel ions assume a distorted pyramidal geometry and are bridged by two sulfurs of different tdas anionic ligands. ESR spectra and the theoretical calculations reveal a very strong antiferromagnetic interaction in the binuclear radical complex, leading to diamagnetic crystals. The theoretical calculations also reveal a very weak antiferromagnetic interaction between adjacent radical complexes. This study is the first to report the magnetism of a binuclear radical nickel complex with tdas as ligand.
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Keywords: Crystal; Magnetism; Radical nickel complex

Document Type: Research Article

Affiliations: 1: College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of CleanProduction of Fine Chemicals, Shandong Normal University, Jinan, PR China 2: College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of CleanProduction of Fine Chemicals, Shandong Normal University, Jinan, PR China 3: Department of Chemistry and Biochemistry, Center for Intelligent Chemical Instrumentation, Ohio University, Athens, OH, USA

Publication date: November 2, 2015

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